The shots fired that caused a lockdown at the US Capitol were outside of the offices where two Connecticut senators work in Washington DC.

According to the staff for U.S. Sen. Chris Murphy, the shooting took place outside of the Hart Office Building, which is located in the area of Constitution Avenue and 2nd Street.

Murphy staffers told Eyewitness News that they initially believed that the shots fired were actually noise from construction. They said there is currently ongoing construction at the United States Supreme Court.

U.S. Sen. Richard Blumenthal's office is also located in that same building.

Murphy staffers said they saw several Capitol police officers with long guns running down the street near Ally Way.

A woman driving a black car tried to run through a barrier in front of a check point near the White House, according to Capitol Police Chief Kim Dine.

After exchanging words with police, the woman hit a police car and then her air bag deployed. She sped away and drove recklessly toward the Capitol building, hitting a security barrier near Second Street and Maryland Avenue.

Police fired on the woman and shot her after she crashed her car, but her condition is unknown.

An announcement was made for all staff members to shelter in place and lock all doors and windows.

Murphy staff members said they moved away from the windows and into an inner conference room.

"Thank you to the Capitol Police for your vigilance and keeping us safe every day," tweeted Murphy, who said he was on the floor of the Senate when the lockdown was reported.

Staffers said Murphy was brought into the chamber after the lockdown was reported.